Graphite Die For Sintering

Graphite die for sintering is often used in high-temperature molding processes, such as powder metallurgy, ceramic sintering, and cemented carbide preparation. Graphite die have become irreplaceable process equipment in this type of industry due to their unique physical and chemical properties.

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Product Description

Ggraphite die for sintering is formed into specific cavities through precision CNC machining, thereby precisely constraining powder materials and achieving densification of the embryo during isostatic pressing or unidirectional pressurization. Their high compressive strength ensures the molding integrity of complex structural parts. In addition, the smooth surface of the graphite mold can directly determine the surface quality of the sintered part, thereby reducing post-processing losses.

During the sintering process, a high temperature environment is often required. The excellent thermal conductivity of the graphite die can achieve rapid temperature rise and fall, ensuring uniform heating of the material and avoiding crack defects caused by thermal stress. Its low thermal expansion coefficient ensures the dimensional stability of the mold during thermal cycles and can be recycled.

In addition, graphite die for sintering is neutral barriers to various chemical reactions. During the sintering process of active materials such as silicon nitride and tungsten carbide, graphite molds only produce a trace amount of solid solution reaction when in contact with molten metal, and its use avoids the adhesion problem of traditional steel molds. In addition, its chemical inertness can withstand acidic sintering atmospheres, and in special processes such as spark plasma sintering, it can also serve as a conductive electrode to achieve multifunctional integration of field-assisted sintering.